|Year|Song|US R&B|US Rap|Album|
|---|---|---|---|---|
|1991|"Mistadobalina"|55|6|I Wish My Brother George Was Here|
|1991|"Sleepin' on My Couch"|—|—|I Wish My Brother George Was Here|
|1992|"Dr. Bombay.."|—|—|I Wish My Brother George Was Here|
|1993|"Catch a Bad One"|—|—|No Need for Alarm|
|1994|"Wrong Place"|—|48|No Need for Alarm|
|1999|"Phoney Phranchise"|—|47|Both Sides of the Brain|
|2000|"If You Must"|—|27|Both Sides of the Brain|
|2008|"Workin' It"|—|—|Eleventh Hour|
|2011|"One out of a Million"|—|—|Golden Era|

Question: the number of singles by del the funky homosapien released before the year 2000
Answer: 6